Some multiple of it, depending on the caliber, the weapon it's shot from, how long it's been traveling before it hits the target, and a bunch of other variables. The speed of sound at sea level is 344 m/s. Bullets travel anywhere from about 200 m/s to 1500 m/s. Some probably travel faster.
None gets anywhere near light speed, though, so my example stands. The force of an object with a tiny surface area traveling a few times the speed of sound should be similar to the force of an object with a larger surface area (like a fist) traveling at nearly light speed. If Wonder Woman and Thor can withstand the latter, why not the former?